5D2 Video focus technique

Hey guys and gals,
I'm new to this forum so first I'd like to say hello.

So my question is, when taking video with an SLR how can I setup the focus where everything from lets say 6 to 10 feet out to infinity is in focus?
Do I need to figure out the hyperfocal distance for the focal length used and set that up? I have a DOF calculator for my iphone and it tells me the hyperfocal distance for a specific focal length.

The reason I ask is because I've seen a few videos taken with SLRs and I noticed everything is in focus without the used making adjustments, so I'm trying to figure out how they do that.

Get a very wide angle lens and shoot at a closed down aperture. It's all about the optics. But then again the whole reason to get a DSLR in the first place is *shallow* depth of field. If you want everything in sharp focus, a standard fixed lens 2/3" camcorder will be much more what you're after. Sony EX1, Panasonic HVX200, etc.

It's an issue for those who shoot weddings. When the bride is coming down the isle, you have to keep the F-Stop at a high number, 6 or higher, and it will help keep every thing in focus. Also, set your focus ring to the infinity setting. Setting up your lens to a lower setting like 1.2 - 2.8 will give you a shallow depth of field.